Renata Dividino; Sergey Sizov; Steffen Staab; Bernhard Schueler. <a href="http://linkinghub.elsevier.com/retrieve/pii/S1570826809000237"><cite>Querying for provenance, trust, uncertainty and other meta knowledge in RDF</cite></a>. 2009. Web Semantics: Science, Services and Agents on the World Wide Web, vol. 7, 2009, p. 204-219. URL: <a href='http://linkinghub.elsevier.com/retrieve/pii/S1570826809000237'>http://linkinghub.elsevier.com/retrieve/pii/S1570826809000237</a>